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MAT 8/1 - algebra

Authored by Kateřina Čebišová

Mathematics

6th Grade

Used 3+ times

MAT 8/1 - algebra
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vypočítej hodnotu výrazu:

m = -3, n = 5

2m2 + n + 3m - n2 =

4

-4

11

- 11

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pětina poloviny z desetiny čísla 1 000 je:

24

10

15

120

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Zapiš jako výraz:

rozdíl dvojnásobku p a čtyřnásobku q zvětšený o 15 =

(2p - 4q) + 15

p2 - q2 + 15

(p - q)2 + 15

(2p - 4q) - 15

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Odstraň závorky a co nejvíc zjednoduš výraz:

- (- 10a + 3b - 6) - 7a - ( - 5b + 8a) =

= -5a - 2b + 6

= -5a + 2b + 6

= 5a - 2b - 6

= 5a + 2b - 6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Doplň tak, aby platila rovnost:

2x . _____ = - 2x5

x4

x3

- x3

- x4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Doplň tak, aby platila rovnost:

______ . 2xy = - 4x2y

2x

- 2x2

2x2

- 2x

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vynásob a výraz zjednoduš:

( 2a + 3b) . ( 2a - 5b) =

= 2a2 - 4ab - 15b2

= 4a2 - 4ab + 15b2

= 4a2 - 4ab - 15b2

= 4a2 + 4ab - 15b2

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